Can cure me my text in english, from the document: it is long, but corrected my faults:

pierre and charles discovered time capsule, of their back-great-grandfather, buried hundred years ago.
they found a kind of paper there representing continents. they discovered a message hidden behind the card, explaining that it represents the earth of time.
they noticed, a kind of pad filled with page, with a rather intimate writing. there were relating messages every day of the author.
they found rings, brilliant, accompanied with stuck labels.
they were impressed by a kind of big book, rather heavy, filled with unknown information. they did not know numerous words which were registered.
they found old fabrics, colored being able to be carried. they have deduct that from it it was the clothes of the time. they found "clothes" for feet, sober color.
they discovered pieces of circular metal, various sizes, material and with various figures registered above.
they were intrigued by a white rectangle, with a long message which was intended for them.
both boys, are proud and happy, to have found a track of their ancestor.
they perceived sorts of trays with pawns, which we put on compartments. to what could be of use these trays? there were sorts of small rather compact white rectangles with various sorts of color and symbols. pierre croya to whom her was of use as currency.
finally they recognized more or less a smartphone, but impossible to use for them. they were surprised all the same with the technological breakthrough of the time.

in a small letter, were registered how their back grandfather imagined the future. later i imagine flying cars. charles was answered, he was right they are of kind of flying car, but more resembling in a drone. it is true that robots are very present, but fortunately they do not make all. our great-grandfather had a good imagination

Pierre and Charles discovered the Time Capsule of their back-great-grandfather, buried hundred years ago.
They found a kind of paper there, representing continents. They discovered a message hidden behind the card, explaining that it represents the Earth of time.
They noticed a pad filled with pages with a rather intimate writing. There were relating messages every day from the author.
They found brilliant rings accompanied with stuck labels.
They were impressed by a rather heavy, big book filled with unknown information. They did not know numerous words which were registered.
They found old colored fabrics, able to be carried. They have deducted that from it was the clothes of the time. They found sober colored "clothes" for feet. They discovered pieces of circular metal that were varying in size and with various figures registered above.
They were intrigued by a white rectangle, with a long message which was intended for them.
Both boys are proud and happy to have found a track of their ancestor.
They perceived sorts of trays with pawns, which they put on compartments. There were sorts of small, rather compact, white rectangles with various sorts of colors and symbols.
Finally they recognized more or less a smartphone, but impossible to use for them. They were surprised all the same with the technological breakthrough of the time.

In a small letter, was how their back grandfather imagined the future.
"Later, I imagine flying cars."
Charles was answered, he was right they are of kind of flying car, but more resembling in a drone. It is true that robots are very present, but fortunately they do not make all. Our great-grandfather had a good imagination.

Corrected:

Pierre and Charles discovered the time capsule of their great grandfather that was buried hundreds of years ago.
They found a map inside representing the continents from that period of time. They discovered a message hidden behind the card explaining that it represents how the world was at the time.
They noticed a kind of wrinkled page with precise and intact writing. This page was a collection of their grandfather's days and how he spent them.
They found rings; brilliant rings, accompanied with labels still stuck to them.
They were impressed by a kind of large book; rather heavy, filled with unknown information. However, they did not understand the words that were written in the book as they were indecipherable and did not correspond to the language they spoke now.
They found old fabrics which had managed to sustain their pigment. They found shoes which were a dull sort of color but were still in one piece and smooth to the touch.
They found pieces of circular metal that came in various sizes as well as different types of unique material they had never seen before.
They were intrigued by a crumpled rectangular paper with a long message which was intended for them.
Both of the boys were proud and happy to have found old but amazing items from their ancestor.
They also found odd trays with money in compartments. The money was small but rather compacted white rectangles with various sorts of colors and symbols. It was in fact Pierre Croya, to whom was the face of the currency in their ancestor's time.
Finally, they recognized more or less a smartphone of the time. Although it was impossible to use for them, they were still surprised with the technological breakthrough of the time.

In a small letter, their grandfather wrote how he had imagined the future- he saw flying cars and the possibility of robots. The boys were shocked as to how life had been then compared to now. Charles thought how amazing their grandfather was right about flying cars although he saw them resembling a drone. It is true that robots are present, but fortunately they have not taken over the world. Our great-grandfather had an astounding imagination.